OALib Journal期刊
ISSN: 2333-9721
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Fe—Cr—Al—Si合金阻尼性能研究
, PP. 1039-1042
Keywords: Fe—Cr—Al—Si合金,阻尼性能,对数衰减率,内耗
Abstract:
采用倒扭摆内耗测试仪研究了Si对Fe-Cr-Al减振合金阻尼性能的影响结果表明在Fe—Cr—Al中添加少量Si(质量分数约为1%)或以Si代替Al并经1273K及以下温度退火后,合金的阻尼性能(对数衰减率)优于Fe—Cr—Al,但经1273K以上温度退火后,阻尼性能不及Fe—Cr—Al;以少量Si代替Fe—Cr—Al中少量Al并经1373K以上温度退火空冷后,合金的阻尼性能比Fe—Cr—Al提高近70%,其机制仍是由磁畴壁的不可逆移动引起的磁机械滞后所决定.
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